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(共26张PPT)
Unit 1
Spring is coming!
Lesson 3 The spring city
学习目标
能够掌握本课时单词、短语和句型。
能读懂关于昆明的春天天气情况，捕捉春天的天气描述、以及春城昆明的城市特点。
能掌握时间状语从句和原因状语从句。
新课讲授
Read and answer
Read the questions and give your answers.
A What do you like most about spring
B What do you know about “the spring city”
Watch and learn about Kunming!
Read the passage, divide the passage into parts and sum up the main point of each part.
Part 1 Para. 1 When we talk about spring, we think of
a season of warm weather and fresh air.
Part 2 Para. 2 The weather of Kunming.
Part 3 Para. 3 The famous scenic spots in Kunming.
Part 4 Para. 4 Ask to visit Kunming.
Reading
Read the passage and answer the questions.
A What do the rocks look like in the Stone Forest
B Why is Kunming called the Spring City
The rocks in the Stone Forest look like tall stone trees.
Because the weather there is spring-like and there are hundreds of beautiful flowers and trees all year round.
When we talk about spring, we think of a season of warm weather and fresh air. We also think of new life, green plants, and budding trees all around us. Spring is short in many places around the world. But in my hometown, it feels like spring nearly all year round.
The weather here is neither too hot nor too cold. The average temperature in winter is 15℃ . In summer, the average temperature is 24℃ . While the sun is shining, the temperature remains pleasant. The city gets about 2,250 hours of sunshine and about 1,000 millimetres of rain every year. Because the weather is spring-like, you can find hundreds of beautiful flowers and trees all year round.
Language points
budding / b d /adj. 开始发展的
feel like 感觉像是
neither... nor... 既不…… 也不……
shine / a n/v. 发光；照耀
remain /r me n/v. 保持；留下；剩余
pleasant / pleznt/adj. 宜人的；可喜的
sunshine / s n a n/n. 阳光；愉快；晴天
millimetre / m limi t (r)/n. 毫米
hundreds of 大量的
There are many famous scenic spots in my hometown. The Stone Forest is a must-see for tourists from home and abroad. There are many special rocks that look like tall stone trees. The Dianchi Lake is the biggest in Yunnan Province. You can enjoy the beauty of the area and go boating or take a walk by the water.
Can you guess the name of my hometown Yes, it’s Kunming — the Spring City. Welcome to my hometown. When you visit, you will feel our warmth and friendliness, just like spring!
scenic spot 景点
tourist / t r st/n. 游客；观光者
home and abroad 国内外
rock /r k/n. 岩石；礁石
v. 摇动；使摇晃
go boating 划船
take a walk 散步
warmth /w mθ/n. 热情；温暖；暖和
1. The weather here is neither too hot nor too cold.
这里的天气既不太热也不太冷。
neither... nor... 既不…… 也不
neither of “二者都不”，作主语时谓语动词用单数
neither...nor...既不…… 也不……，连接主语时谓语动词，遵循就近原则。
e.g. Neither of my parents has ever read the book.
Neither she nor I am going to the party.
2. While the sun is shining, the temperature remains pleasant.
remain /r me n/ v. 保持
后接形容词、名词、分词或介词短语作表语
e.g. The old town remains quiet despite more tourists.
尽管游客变多，古镇依旧宁静 。
3. Because the weather is spring-like, you can find hundreds of beautiful flowers and trees all year round.
hundreds of 数以百计的；成百上千的
hundreds与of 大量、众多；hundred、thousand、million前有具体数字one、two 时，用单数形式，表确切数量，且不与of连用；thousands of数以千计的 millions of数百万的
e.g. Hundreds of people visit the Great Wall every day.
每天有成百上千人游览长城。
Read and pay attention to the parts in yellow.
When we talk about spring, we think of a season of warm weather and fresh air.
While the sun is shining, the temperature remains pleasant.
Because the weather is spring-like, you can find hundreds of beautiful flowers and trees all year round.
Grammar focus
An adverbial clause is a type of dependent clause that functions as an adverb in a sentence. We use when and while to show time, and because to show the reason for an event.
时间状语从句 (Adverbial clauses of time)
1. when的用法
when引导的时间状语从句的动作既可以和主句的动作同时发生，又可以在主句的动作之前或之后发生。它的谓语动词既可以用延续性动词，也可用非延续性动词。
e.g. I learned to plant trees when I visited my uncle last spring.
(与主句动作同时)
When the pea plant grows taller, I will give it a shelf to climb on.
(在主句动作之前)
时间状语从句最常见的引导词是when、while和as，它们都有“当……时候”的意思。
2. while的用法
while引导的时间状语从句的动作可以和主句动作同时发生，也可以是在从句动作期间发生主句动作。它的谓语要用延续性动词或状态动词。
e.g. We are helping Panda while we are talking.
(主、从句动作同时)
His father called while he was out.
(从句状态期间发生主句动作)
My mother comes in while I'm doing my homework.
(从句动作期间发生主句动作)
3. as的用法
as引导的时间状语从句的动作表示可以和主句动作同时发生，翻译成“一边……一边……”，也可以是二者“一前一后”紧接发生，还可以表示“随着”的含义。
e.g. The students took notes as they listened.
(主、从句动作同时)
She breaks the cup just as she is running away.
(主句动作紧接从句动作)
As we talked on, he got more and more excited.
(随者)
注意：
(1) 表示主、从句动作同时发生时，as从句通常用一般现在时；while从句可以用一般现在时，也可以用现在进行时。
(2) 如果从句动作和主句动作同时发生，并且从句谓语为延续性动词时，when、while、as 可以互换使用。
e.g. When/While/As she is making a phone call, I'm writing a letter.
While/When/As I am walking down the street, I notice a police car in front of the bank.
(3) 主、从句动作都发生在将来时，when从句谓语通常用一般现在时态。
e.g. When you visit the city, you will feel our warmth and friendliness, just like spring!
(4) 如果when、while引导的从句的主语与主句主语相同，而从句的谓语又有助动词be时，从句中的主语和be可以省略，但as从句一般不这样用。
e.g. I feel free when (I am) in the water.
Pedestrians should walk on the zebra crossings when (they are) crossing the street.
When/While (he is) reading, he falls asleep.
While pouring a glass of milk, Jeremy notices something written on the package.
原因状语从句 (Adverbial clauses of cause)
原因状语从句是用于说明主句原因的从句类型。
1. because引导的原因状语从句一般放于主句的后面，because从句位于句首时要用逗号分开，放在句末时，可不用逗号分开。because表示直接原因， 语气最强， 最适合回答why引导的疑问句。
e.g. I do it because I like it. 我做这件事是因为我喜欢。
Because she was ill, she didn't go to school.
因为她生病了，所以没去上学。
2. as引导原因状语从句时表示附带说明的“双方已知的原因”， 语气比because弱， 较为正式， 位置较为灵活(常放于主句之前)。
e.g. As you are tired, you had better rest.
既然累了， 你最好休息一下。
I went to bed early, as I was exhausted.
我睡得早， 因为我已筋疲力尽了。
3. for在句子中主要作为并列连词 ，引导原因状语从句与because等从属连词不同，for引导的原因并非直接导致主句行为的核心因素，而是对主句结果的补充性解释或附带说明，语气较弱，通常不用于回答"why"的提问。 必须放在主句之后，与主句用逗号隔开，不可置于句首。
e.g. The ground is wet, for it rained last night.
地面是湿的，因为昨晚下雨了。
Find out “adverbial clauses of time” in the passage.
Practice
When you visit, you will feel our warmth and friendliness, just like spring!
Circle the correct words.
A They didn't go to the beach today (because/but) it was raining.
B Wang Mei called me (while/because) I was writing an email.
C People eat pears (so/when) Jingzhe comes.
D A heavy rain fell (because/while) they were asleep.
Read and complete the conversation.
Susan: I'm from Australia. In my hometown, spring is warm and wet. It begins in November.
Rita: I'm from India. _______
Li Jin: I come from Yunnan, China. _______ The average spring temperature is 20℃.
Tom: I live in France. Spring begins in April and ends in June. _______
Dong Chao: I'm from Heilongjiang, China. _______
A. The temperature is between 4℃ and 15℃.
B. We celebrate the Festival of Colours when spring is coming.
C. Because the average temperature is 5℃, spring is very cold.
D. The weather in my hometown is neither too hot nor too cold.
B
D
C
A
一、填空
1. The bell rang while Lily __________ (read) a magazine.
2. Neither the twins nor their mother __________ (like) watching TV.
3. My son was playing computer games __________ (当……时候） I was cooking.
4. The town r__________ (保持) a beautiful place after years.
5. 当我在做作业的时候，大明正在看电视。
__________ I was doing my homework，Daming __________ __________ TV.
was reading
while
While
was
当堂检测
likes
emains
watching
二、单项选择
1. I was watching TV ________ my brother was writing an email at home at this time last night.
A. as soon as B. after C. when D. while
2. I was cooking ______ I heard someone knocking at the door.
A. as soon as B. when C. until D. while
3. Rose was doing her homework ______ the bell rang.
A. as soon as B. when C. until D. while
4. There are __________ people in the park on weekends.
A. two hundreds B. hundred of
C. hundreds of D. two hundreds of
Homework
Master adverbial clauses of time and cause.
Preview Unit 1 Lesson 4.

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